Both Uses

contrast
in
A Farewell to Arms
(Edited)

There was a great contrast between his world pessimism and personal cheeriness.†
Book 2

contrast = notable difference
He was living to be one hundred years old and played a smoothly fluent game of billiards that contrasted with his own ninety-four-year-old brittleness.†
Book 4 *

contrasted = differed

Definitions:

(1) (contrast as in: contrast their writing styles)
point to differences between; or compare to show differences
(2) (contrast as in: there is a contrast)
a difference -- especially a notable difference; or the side-x-side arrangement of things that draws attention to an unmissable difference
(3) (contrast as in: sharpen the picture contrast)
the difference between tones of an image -- as in a photo or video -- such as the quality of brightness or the intensity of shades or colors
(4) (meaning too rare to warrant focus)